LIST OF ILLUSTRATIONS 



XXIX. 



XXX. 



XXXI. 



XXXII. 



XXXIII. 



XXXIV. 



XXXV. 



XXXVI. 



xxxvn, 



XXXVIII. 



XXXIX. 



XL. 



XLI. 



XLII. 



XLIII. 

 XLIV. 



XLV. 



XLVI. 



'XLVII. 



XLVIII. 



XLIX. 



L. 



LI. 



LII. 



Fragile Bladder Fern; Bulblet Blad- 

 der Fern 69 



Fragile Bladder Fern ... 70 

 Purple Cliff Brake; Common Brake 74 

 Slender Cliff Brake .... 77 



Climbing Fern 78 



Maidenhair Si 



Maidenhair 82 



Northern Woodsia ; Smooth Woodsia ; 



KusTY Woodsia 85 



Bluxt-lobed Woodsia; Ebony Spleen- 

 wort; K<n-. HORTON/E . . . .90 

 Green Spleenwort; Wall Rue Spleen- 

 wort ; Maidenhair Spleenwort ; 

 Mountain Spleenwort; Pinnatifid 

 Spleenwort ..... 97 

 Narrow-leaved Spleenwort. . . loi 

 Silvery Spleenwort . . . .102 



Lady Fern 106 



Co.mmon Grape Fern; Dissected Grape 



Fern 113 



Botry'chium ternatum sub-var. inter- 

 medium 114 



Botrychium ternatum var. rut.«fo- 

 LiuM; Little Grape Fern; Matricary 



Grape Fern 118 



Rattlesnake Fern; Adder's-Tongue . 122 

 Festoon Ground Pine .... 126 

 Tree Club-Moss; Stiff Club-Moss . 129 

 Swamp Evergreen; Fir Club-Moss . 130 

 Common Club-Moss . . . .133 



Wood Horsetail; Scouring-Rush . 13S 

 Field Horsetail; Pipes. . . . 141 

 Sedge-like Horsetail .... 142 



